Pesquisa Agropecuária Tropical (Oct 2011)

CASSAVA CULTIVARS GROWTH, PHENOLOGY AND YIELD CRESCIMENTO, FENOLOGIA E PRODUTIVIDADE DE CULTIVARES DE MANDIOCA

  • Humberto Sampaio de Araújo,
  • Andréia Cristina Silva Hirata,
  • Amarílis Beraldo Rós,
  • Nobuyoshi Narita

DOI
https://doi.org/10.5216/pat.v41i4.11075
Journal volume & issue
Vol. 41, no. 4

Abstract

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<p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: x-small;"><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Cassava is cultivated in all Brazilian States, what demands specific information </span></span></span></span></span></span></span><span style="color: #333333;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">about the</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> most </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">used cultivars.</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> In this study, nine cassava cultivars for industry (IAC 12, IAC 13, IAC 14, IAC 15, Roxinha, Fibra, Fécula Branca, </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Branca de Santa Catarina, and Espeto</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">) were evaluated, concerning growth and phenological attributes, as well as roots yield. The experimental design was randomized blocks, with four replications. IAC 14 was the highest cultivar, while IAC 15, </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Fécula Branca, and Espeto</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> were the smallest ones. </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Fécula Branca and Espeto presented just one stem per plant</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">. Branching was present in all cultivars, except for Fibra, and at different times. </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Branca de Santa Catarina</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> was the first one to bloom. IAC 14 showed higher roots yield than </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Branca de Santa Catarina, IAC 12, Fécula Branca, Espeto, IAC 13, and IAC 15. Roots dry matter for IAC 12</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> was higher than for Roxinha and </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">Branca de Santa Catarina</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">. </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">The aerial part features differed among</span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> cultivars, while root number, individual mass, length, and diameter did not differ. Results showed that those cultivars presented different growth and phenological features, as well as different root yields.</span></span></span></span></span></span></span></span></span></span></p><p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: x-small;"><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">A mandioca é cultivada em todos os Estados brasileiros e isto demanda a obtenção de informações específicas a respeito das cultivares mais utilizadas. Neste estudo, nove cultivares de mandioca para indústria (IAC 12, IAC 13, IAC 14, IAC 15, Roxinha, Fibra, Fécula Branca, Branca de Santa Catarina e Espeto) foram avaliadas, quanto a características de crescimento e de fenologia e quanto à produtividade de raízes. O delineamento experimental foi em blocos ao acaso, com quatro repetições. IAC 14 apresentou o maior porte, enquanto IAC 15, Fécula Branca e Espeto, os menores. Fécula Branca e Espeto apresentaram apenas uma haste por planta. A ramificação de hastes ocorreu em todas as cultivares, com exceção de Fibra, e em diferentes épocas. Branca de Santa Catarina foi a primeira a florescer. IAC 14 apresentou produtividade de raízes superior a Branca de Santa Catarina, IAC 12, Fécula Branca, Espeto, IAC 13 e IAC 15. A massa seca de raízes de IAC 12 foi superior a Roxinha</span></span></span></span></span></span></span><span style="color: #ff0000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;"> </span></span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">e Branca de Santa Catarina. Características relacionadas à parte aérea diferiram entre as cultivares, enquanto número, massa individual, comprimento e diâmetro de raízes não diferiram. Os resultados permitiram concluir que as cultivares estudadas apresentaram distintas características fenológicas e de crescimento, bem como diferentes produtividades de raiz.</span></span></span></span></span></span></span></span></span></span></p>

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